Triton magnetic moment

$μ_{t}$ = 1.504 609 5178(30) × 10⁻²⁶ J T⁻¹

Value: 1.504 609 5178 × 10⁻²⁶ J T⁻¹
Standard uncertainty: 3 × 10⁻³⁵ J T⁻¹
Relative uncertainty: 2.0 × 10⁻⁹ (2 parts per billion)
Status: Measured
Symbol: $μ_{t}$
Source: CODATA 2022 via NIST · NIST entry

Use in a calculation

# triton magnetic moment, CODATA 2022 (NIST)
triton_magnetic_moment = 1.5046095178e-26  # J T^-1, standard uncertainty 3e-35

# SciPy: scipy.constants.physical_constants['triton mag. mom.']

What it is

The magnetic moment of the triton, the nucleus of tritium (one proton and two neutrons): how strongly it behaves like a tiny bar magnet. A negative value means it points opposite to the spin.

How the value changed, 1998–2022

Each point is one CODATA adjustment, plotted as its difference from the 2022 value; the bars show one standard uncertainty (an arrowhead means the bar runs off the chart).

Relative uncertainty

CODATA	Value (uncertainty)	Relative uncertainty	Change from previous
2022	1.504 609 5178(30) × 10⁻²⁶	2.0 × 10⁻⁹	−0.8 σ of 2018
2018	1.504 609 5202(30) × 10⁻²⁶	2.0 × 10⁻⁹	+1.4 σ of 2014
2014	1.504 609 503(12) × 10⁻²⁶	8.0 × 10⁻⁹	+1.5 σ of 2010
2010	1.504 609 447(38) × 10⁻²⁶	2.5 × 10⁻⁸	+2.0 σ of 2006
2006	1.504 609 361(42) × 10⁻²⁶	2.8 × 10⁻⁸

“Change from previous” is the shift in the value divided by the standard uncertainty of the previous adjustment. Earlier values are converted into the current unit where NIST changed it (for example J s to J Hz⁻¹).